/**
 * 全站路由配置
 *
 * 建议:
 * 1. 代码中路由统一使用name属性跳转(不使用path属性)
 */
import Vue from 'vue'
import Router from 'vue-router'
import http from '@/utils/httpRequest'
import {isURL} from '@/utils/validate'
import {clearLoginInfo} from '@/utils'
import utilApi from '../utils/utils'

Vue.use(Router)

// 开发环境不使用懒加载, 因为懒加载页面太多的话会造成webpack热更新太慢, 所以只有生产环境使用懒加载
const _import = require('./import-' + process.env.NODE_ENV)

// 全局路由(无需嵌套上左右整体布局)
const globalRoutes = [
  {path: '/404', component: _import('common/404'), name: '404', meta: {title: '404未找到'}}
]

// 主入口路由(需嵌套上左右整体布局)
const mainRoutes = {
  path: '/',
  component: _import('main'),
  name: 'main',
  redirect: {name: 'home'},
  meta: {title: '主入口整体布局'},
  children: [
    // 通过meta对象设置路由展示方式
    // 1. isTab: 是否通过tab展示内容, true: 是, false: 否
    // 2. iframeUrl: 是否通过iframe嵌套展示内容, '以http[s]://开头': 是, '': 否
    // 提示: 如需要通过iframe嵌套展示内容, 但不通过tab打开, 请自行创建组件使用iframe处理!
    {path: '/home', component: _import('common/home'), name: 'home', meta: {title: '首页'}},
    {path: '/theme', component: _import('common/theme'), name: 'theme', meta: {title: '主题'}}
  ],
  beforeEnter (to, from, next) {
    let token = Vue.cookie.get('uid')
    if (!token || !/\S/.test(token)) {
      clearLoginInfo()
      window.location = 'http://www.zhou.com:12220/#/login?returnUrl=' + Base64.encode(window.location)
    }
    next()
  }
}

const router = new Router({
  mode: 'hash',
  scrollBehavior: () => ({y: 0}),
  isAddDynamicMenuRoutes: false, // 是否已经添加动态(菜单)路由
  routes: globalRoutes.concat(mainRoutes)
})

router.beforeEach((to, from, next) => {
  let uid = utilApi.getCookie('uid')
  let activeUser = utilApi.getActiveUser()
  let aaa = new Promise((resolve, reject) => {
    if (uid && !activeUser) {
      http({
        url: '/openapi/oauth/userjwt',
        method: 'get',
        params: http.adornParams(),
        async: false
      }).then(({data}) => {
        if (data.success) {
          activeUser = utilApi.getUserInfoFromJwt(data.jwt)
          if (activeUser) {
            utilApi.setUserSession('activeUser', JSON.stringify(activeUser))
          }
        } else {
          clearLoginInfo()
          window.location = 'http://www.zhou.com:12220/#/login?returnUrl=' + Base64.encode(window.location)
        }
        resolve()
      })
    } else {
      resolve()
    }
  })
  aaa.then(() => {
    // 添加动态(菜单)路由
    if (activeUser && uid && uid === activeUser.uid) {
      // 1. 已经添加 or 全局路由, 直接访问
      if (router.options.isAddDynamicMenuRoutes || fnCurrentRouteType(to, globalRoutes) === 'global') {
        next()
      } else {
        http({
          url: http.adornUrl('/sys/menu/nav'),
          method: 'get',
          params: http.adornParams()
        }).then(({data}) => {
          if (data && data.success) {
            // 2. 获取菜单列表, 添加并保存本地存储
            fnAddDynamicMenuRoutes(data.menuList)
            router.options.isAddDynamicMenuRoutes = true
            sessionStorage.setItem('menuList', JSON.stringify(data.menuList || '[]'))
            sessionStorage.setItem('permissions', JSON.stringify(data.permissions || '[]'))
            next({...to, replace: true})
          } else {
            sessionStorage.setItem('menuList', '[]')
            sessionStorage.setItem('permissions', '[]')
            next()
          }
        }).catch((e) => {
          clearLoginInfo()
          window.location = 'http://www.zhou.com:12220/#/login?returnUrl=' + Base64.encode(window.location)
        })
      }
    } else {
      clearLoginInfo()
      // 跳转到统一登陆
      window.location = 'http://www.zhou.com:12220/#/login?returnUrl=' + Base64.encode(window.location)
    }
  })
})

/**
 * 判断当前路由类型, global: 全局路由, main: 主入口路由
 * @param {*} route 当前路由
 */
function fnCurrentRouteType (route, globalRoutes = []) {
  var temp = []
  for (var i = 0; i < globalRoutes.length; i++) {
    if (route.path === globalRoutes[i].path) {
      return 'global'
    } else if (globalRoutes[i].children && globalRoutes[i].children.length >= 1) {
      temp = temp.concat(globalRoutes[i].children)
    }
  }
  return temp.length >= 1 ? fnCurrentRouteType(route, temp) : 'main'
}

/**
 * 添加动态(菜单)路由
 * @param {*} menuList 菜单列表
 * @param {*} routes 递归创建的动态(菜单)路由
 */
function fnAddDynamicMenuRoutes (menuList = [], routes = []) {
  var temp = []
  for (var i = 0; i < menuList.length; i++) {
    if (menuList[i].children && menuList[i].children.length >= 1) {
      temp = temp.concat(menuList[i].children)
    } else if (menuList[i].url && /\S/.test(menuList[i].url)) {
      menuList[i].url = menuList[i].url.replace(/^\//, '')
      var route = {
        path: menuList[i].url.replace('/', '-'),
        component: null,
        name: menuList[i].url.replace('/', '-'),
        meta: {
          menuId: menuList[i].id,
          title: menuList[i].menuName,
          isDynamic: true,
          isTab: true,
          iframeUrl: ''
        }
      }
      // url以http[s]://开头, 通过iframe展示
      if (isURL(menuList[i].url)) {
        route['path'] = `i-${menuList[i].id}`
        route['name'] = `i-${menuList[i].id}`
        route['meta']['iframeUrl'] = menuList[i].url
      } else {
        try {
          route['component'] = _import(`modules/${menuList[i].url}`) || null
        } catch (e) {
        }
      }
      routes.push(route)
    }
  }
  if (temp.length >= 1) {
    fnAddDynamicMenuRoutes(temp, routes)
  } else {
    mainRoutes.name = 'main-dynamic'
    mainRoutes.children = routes
    router.addRoutes([
      mainRoutes,
      {path: '*', redirect: {name: '404'}}
    ])
    sessionStorage.setItem('dynamicMenuRoutes', JSON.stringify(mainRoutes.children || '[]'))
    console.log('\n')
    console.log('%c!<-------------------- 动态(菜单)路由 s -------------------->', 'color:blue')
    console.log(mainRoutes.children)
    console.log('%c!<-------------------- 动态(菜单)路由 e -------------------->', 'color:blue')
  }
}

export default router
